Caster.



A. BALLENBERG.

CASTER.

APPLIcMloN FILED oc.5.1915.

1,179,503. Peeented Feb. 8, 1916.

6229. 1 y' 1 woawtoz @M Adolph Zienberg,

THE COLUMBIA PLANOGRAPH 0.. WASHINGTON D c `AIDOIJll-I BALLENBERG, OF NEW YORK, N. Y.

ratones.

Specicatonof Letters Patent.

casrnn.

Patented lleb.` 8, 19316.

`Application led October 5, 1915. Serial No. 54,172.

To all whom t may concern.'

Be it known that l, ADoLrH BALLENBERG, acitizen of the United States, and residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Casters, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same. i

This invention relates to casters and particularly to devices of this classdesigned for use in connection with heavy articles of furniture and other heavy articles having tubular legs, or hollow or semi-hollow legs into which the attaching parts of the caster are inserted; and the object of the invention is to provide an improvement in this class of devices whereby the casters are made detachable and are held in position by spring clamp devices which are automatic in operation, and wherebyythe casters maybe quickly and easily attached and detached whenever necessary; a further object being to provide casters of the olassspecified with an improved top bearing involving a pivot head or block loosely mounted on the'top of the pintle of the caster, `and in which said pintle-is freely rotatable; a-still further object being to provide casters-of `the class specified which may be applied to the tubular or hollow, or partially hollow legs or supports of articles .of various classes, and which may be cylindrical in crosssection, square or octagonal in form. y

The invention is fully disclosed in the following` specification, of whichthe accompanyingldrawing forms a part, in which the separate parts `of my improvement. are designated by suitable reference characters in each of the views, and in which :f

Figure lis a sectional side view showing my improvement applied to the tubular leg of an article of furniture orother articles; Fig. 2 a sectional view at right angles to that shown in Fig. l; Fig. 3 a transverse section on the linev 3-3 Vof Fig. 2; Fig. l a partial section on the line f-t o f Fig.` 3; and,- Fig. 5 `a view similar to Fig. 4l but` showing a modification. y. 4

ln the accompanying drawing, I have .shown at cz a leg or supportfor an article of furniture, such as a bed or any other heavy article, and l have also shown at b a caster comprising a yoke member b2, a roller b3 mounted in the yoke member, and a pintle if connected with the cross head portion b5 of the yoke member 792. In the practice ofiny invention, as shown in the drawing, a disk- `shaped plate o is loosely mountedon the pintle b4 and on which the leg or support a rests, and said disk-shaped plate is preferably provided with a raisedV central portion c2. l also provide two similar clamp devices Z formed from spring metal plates and each of whichA comprises a horizontal `top portion (Z2, a horizontalfbottom portion d3 and an inwardly curved U-shaped or V- shaped central portion dt, `as clearly shown inFig. 3, and the inwardly curved U-shaped or Vshaped central portions of these spring clamp devices abut as is also shown in Fig. 2, and are provided with vertically arranged slots or openings d5 through which the pintle passes. y

y The overlapping bottom parts cl3 of the spring clamp devices are provided with oblong slots or openings d through which the pintle passes, and the top overlapping part Z2 of one of the spring clamp devices is provided with a similar slot or opening d?.

Botatably mounted on the top of the pintle b4, as shown in Figs. l and 5,`is a block e provided in the bottom thereof with a conical socket e2 adapted to receive a conical `point b on the top of the pintle b4, and said block is provided `with a neck c3 which passes through the slot or opening d? in the top overlapping part d2 of one of the spring clamp devices Z and through an aperture ZS in the top'overlapping part Z2 of the other spring clamp device d, and said neck is riveted to form a head e4. The aperture d8 in the top overlapping part Z2 of one of the spring clamp devices d is preferably made to closely fit the' neck e? of the block e,

while permitting` it to rotate but the slots or openings d and (Z7 are of sufficient longltudinal `dimensions to permit one of the sprlng clamp devices (Z to freely move transversely ofthe pintle at both the top and bottom thereof, while the other spring clamp device d is movable ,only at the bottom thereof, but in Fig. 5, I x have shown both of the top overlapping parts d? of the spring clamp devices (Z as provided with oblong slots or openings, whereby said spring clamp devices are both movable transversely of the pintle at the `top and bottom thereof. rIhe construction shown in F1g. 4C, however, is`

of this class.

Figs.' 1 and 2.

spring clamp devices (Z serves to prevent too `free movement of the block c on the pintle The pintle b4 is provided just above the y overlapping parts d of the spring clamp devicesd with a collar or other suitable stop f which also aids in holding the bottom parts of the spring clamp devices in proper position on the pintle.

vIn the central bottom part o'f'the diskshaped plate c is a deep semi-circular, or yapproximately semi-circular recess 02 in which tits a corresponding raised Vbearing 57 on the central top portion of the cross head b5 of the yoke of the caster, and the pintle which is formed in connection or rigidly secured to said yoke or cross head portion passes upwardly through 'said bearing and through said recess, and the disk or plate c which supports the load rests on said bearing. This part of the construction, however, together with the caster, or the separate parts thereof, and the disk or plate c form, in themselves, no part of my invention and is similar to thatl of other devices Vhcn it is desired to connect my improved caster with a tubular leg or support, as shown in Figs. 1 and 2, all that is necessary is to force the pintle with the spring clamp devices connected therewith into the bottom of the leg or support` until said leg or sup;- port rests on the plate c as clearly shown in In this operation, the spring clamp devices d present four corners both at the top and bottom thereof, or eight .corners in all which press firmly Von. the inner yoke of the leg or support, and this securely binds the'caster to the leg or support and prevents any lateral movement of the caster in or on the leg `orsupport, 0r any movement of said leg or support on the caster.

In the accompanying drawing, I have shown only a tubular legor support, or a leg or support which is cylindrical or cir lcular in cross section, but it must be underst ood that my improved caster attaching dev Y vice or devices will operate in the same `way in a souare leg orsupport, or in an octagonal leg or support.

The spring clamp devices l are shown and described in a prior application filed by me Copies n? this what may be obtained for and bearing on Vthe pintle; Y

five cents each,V by addressing Washington, D. C.

September 17, 1915, Serial No. 51,139, and in themselves form no part of this invention which is limited to the bearing block e on the top of the pintle, and the method of connecting it with said spring `clamp devices, and while I have shown the preferred form of said block and the preferredV method of connecting it with the spring clamp devices and the pintle. my invention is not limited to thesedetails of construction, and

,various changes Vtherein and modifications thereof may be made. within the scope ofthe appended claims` without, departing from. the spirit of my invention or sacrificing its advantages.

Having fully described my invention what VI claim as new and desire to secure by Letters Patent, isr- 1. "A caster provided with a pintle, spring clamp devices mounted on said pintle and having overlapping ends, anda pivot block mounted in connection `with said ends and bearing on the top of the pintle.V

2. A caster provided with a pintle` spring clamp devices loosely mounted on said pintle and ha vingoverlapping top ends, and a plvot 'block loosely mounted in connection with said` ends landbearing on the top of the pintle. y

3.` A caster provided witha pintle. spring clamp devices loosely mounted onsaidV pin-v tle, and having overlapping top. ends, and a pivotblock loosely and rotatably mounted in connection with said ends. l

4. A caster provided with a pintle, an attaching means loosely mounted thereon and extending above the top ofthe pintle,`and a pivot block rotatably mounted in said means ,and vertically movable therein and bearing ,on the top of the-pintle.

5. A caster provided lwith a pintle. clamp `devices mounted on said pintleand having overlapping top end members; and a pivot block .supported z v ope of said end members 6.`A caster provided with a pintleclamp devicesmounted on saidlpintle and having overlapping top end members` and a pivot block supported bvone of said end members and bearing on the pintle., the other end member being movable transversch7 Of Said-block. In testimony that I claim the foregoing as my invention I have signed my name. in

fsa

presenceoi'y the subscribing witnesses, this `2nd day of October,1915.

ADoLPH BALLENBERG. l'

Witnesses:`

C. MULREANY, H. E. TiioMrsoN.

the Commissioner of Eatents, 

